Sewing machine



L. ROSEMAN SEWING MACHINE Feb. 25 1930.

Filed March 19. 1928 r a; M

m l! fi q 0. a a w .a m FE. u

[N V EN TOR. Leoflosemazv,

, A TTORNEY J Patented Feb. '25, 1930 PATENT OFFICE,

f Q1 onos MAN, OF'NFEWARK, NEW JERSEY SEWING MACHINE Application filed March 19, 1928. Serial No. 262,648.

This'invention relates, generally, to improvements in sewing machines; and the same has reference, more particularly, to a novel construction and 'arrangement of means for controlling the movement of fastener provided tape to and at the sewing point of the machine, to assure accurate placing of the'attaching stitches relative to metallic fasteners of the tape, whereby the machine needle will skip the sides of the latter i'n thatthe means to assure a controlled move- Q ment of ithefastener tape tothe stitching or sewing point comprises an automatically actuated push-finger whichis caused to engage eachfastener of the tape. as 1t is ad- V "vancing toward the sewing point, and thereupon to push the sameto a predetermined Jfposition whereby any tendency of the tape to underfeed is compensated for,.so that the proper number'of stitch es between and travl 'ersing the fasteners will be .made, while at upon the ordinary work-feeding; means of the sewing machine mechanism so that uni form operation of the latter is assured regardlessof whether the work operatedlupon is heavy or light, 1 e. thick or comparatively thin. I a Another object of the invention is-topro- ,vide a modified arrangement and. operation .of means located atthesewingpoint of the machine, whereby each fastener is moved to q aflprejdetermined position relative to the reciprocating sewing needle, sothat the trav ersing-of the formed stitchesacrossthe metal breaking the needle or damaging the fasteners isavoided; this modified means being an alternative for I that shown and described in aforesaid copending application for pa ent-.1

the same time a governing effect is exercised V partsofthe fasteners Without contactthere-j with is also assured and consequently risk of Other objects of the present invention, not at this time more particularly enumerated, will be clearly understood from the following detailed description of the same.

The present invention is illustrated in the accompanying drawings, in which Figure 1 is a plan view and Figure 2 is a 4 front side elevation of the mechanism for controlling the movement of fastener tape relative to the sewing point ofthe sewing machine in which said mechanism is incorporated. Fig. 3 is a fragmentary detail view of the usual stitch forming and work feeding means of the sewing-machine.

Similar characters of reference are employed in the said views, to indicate corresponding parts. I

Referring now to said drawings, the reference' character 10 indicates the bed-plate'of a sewing machine, preferably of the general. typeand'kind shownand described in my heretofore mentioned copending application for patent, and from the main shaft of which is driventhe vertical shaft 2 1 for actuating the particular tape controlling mechanism, with which the instant inventiondeals. I

Secured upon thebed-plate 10, and aligned to the path of movement of fastener'tape (which is indicated in Figure 1 by dot and dash lines) over the same toward the stitching and work feeding mechanism of the machine (constituted by the presser foota, feed dog 6, needle 0 and looper (Zsee Fig. 3), is a guide plate 16 to overhang one side of the fastener tape, and serving to provide, in cooperation with a second guide member 17 at the oppositeside of the tape, a guideway through which the tape passes toward the stitching point'of the machine. The tape is provided with metallic fasteners at spaced intervals, eye-loops 20 being illustratedin connection therewith. Usually the eyeloops 20 are spacedone inchapart, and the sewing mechanism is adjusted to produce a predetermined number of stitches per inch be understood that the mechanism may be adjusted and arranged in any given case to correspond to any selected arrangement in these respects. d

In practice the eye tape is first passed through a delivery feed and controlmechanism whereby the same is drawn from a roll thereof (not shown) and then passed through the guide means 16-17; the garment to which the tape is to besewn being fed over thesame and intermediatethe presser foot and feed-dog of the sewing mechanism in the usual manner well understood by those familiar with sewing machine construction or operation.

Fixed on said bed-plate 10 is a bearing frame 25 provided with-transversely aligned bearings .26 in which is journaled a trans? verse shaft 27. Said transverse shaft 27 is driven from said vertical shaft 24 by means of intermeshing screw-gears 28 and 29, respectivelyfixed on said Vertical and transverse shafts.

The delivery feed andcontrol mechanism comprises a bearing'bracket fixture 30 which is fixed on the bed-plate to overhang the front side thereof. ,Journaled in said bearing bracket is a lay shaft :31. This lay shaft 31is driven from said transverse shaft 27 by means of intermeshing screw-gears 32 and 33 respectively fixed on, said transverse and lay shafts. Fixed on the outer end of saidlay shaft 31, so as to be rotated thereby, is aifeed roller 34, constituting one of a pair of such rollers. Connected with said bearing'bracket 30, in a manner preferably corresponding to that disclosed in my heretofore mentioned patent application, is a bearing arm 35, in the :upper end of which'is journaled a spine die 36, and fixed on the outer end of said spin 'dle is a feed roller 37, constituting the sec.- .Ond ofsaid pair of such-rollers, the same beingadapted to oppose and cooperate with said feed roller 34. Saidsecond :feed roller 3T-is driven .in'an opposite'direction to the V feed'roller 3.4 by means of intermeshingspur gears-38-and39 respectively fixed-on said lay shaft 31 and spindle 36. Said secondfeed roller 3;? is preferably annularly grooved as shown to provide clearance space for the passageof the metallic eyes 20 of the fastener tape T, as the latter is'moved through and between the pair ofrollers 34 and 37. The tape engaging faces of said rollers 34437 are. preferably roughened, as by knur1ing,to better-grip the tape when opera atively engaging and feedingthe same. The means for governing or controlling the advanceof the tape as it moves toward the sewingpoint of the machine, the operas tion and advantages of which will be'hereinaftermorefully set forth, comprises timed means toengage each eye of the tape insuch manner as to produce a'forward compensatory thrust or push upon the tape adapted to compensate for any tendency of the latter to lag or otherwise make improperly timed advance under the normal intermittent action of the feed and stitch forming mechanismof the sewing machine, so that a uniform properly controlled movement of the tape and its fasteners to the stitching or sewing point of the machine isassured, to the endthat the selected number of stitches sewn. between and across the fasteners of the tape will be produced. Connected with the hori-' eyes 20 of the tape T, Said push-bar 41 is; provided intermediate its endswith an up-' wardly extending pivot stud 43 which pro-.v ject through a slot 44 formed in said bearing bracket fixture 30 Secured upon said bearing bracket fiXture 30 is a housing member 45, in the forward'end of which is slidablydisposed .a push-piece 46 adapted to bearagainst said pivot stud 43. Vithin said housing member 45 is a compression spring v 47 backed by a threaded plug 47 secured in the rearward: end of said housing member. Said spring thrust-s againstsa1d push-piece 46, which-1n turn thrusts'forwardly on the pivot stud of the push-bar-41 thus biasing the latter to forwardly, thrust operative pro-'- sition relative to the fasteners or eyes 20 of the tape T. The push-bar 41 is tapered both forwardly and rearwardly from said pivot stud .43f'so as to be capableof'limited turning movement in horizontalplane about the axis of said pivot stud. Secured on the rear end" of said push-bar 41 is .a rocker stud 48. A

spring device 49 has one arm arranged .to" bear tensionally against said roller-stud 48 in such manner as to bias said push-bar so as to position its forward end in normally rearwardly swung position, with asidepore tion 41? stopped against the adjacent side 'of the slideway :40. i

- The means for automatically producing timed actuationof saidpush-bar 4, whereby its push-.finger .42lmay be projected intoand withdrawn from the path'of movement-of the eyes 'of'the tape as required, and, when properly'related to the; latter, oscillated at proper times to transmit-to the tape the de sired governing or. compensating forwardl thrust or push, preferably comprisesthe following devices "Connected with said housing 45'is an wardlyand rearwardly extending supporting arm 50, and pivot-ally; connected with the free end of said arm is a depending lever member 51. Saidlever member is provided at its lower free end with a rearwardly turnedporg U011, adapted to engage the forward side of said roller stud 48. Saidlever member is further provided with an" off-set portion 53 which carries a laterally projecting roller stud 54.- Fixed on said' transverse shaft 27,,

is a cam wheel 55 having a peripheral structure adapted to provide a high cam-portion 56 and a low cam portion '57, which, when the cain wheel is rotated'engages said roller stud '54 toactuate saidlever member 51. The high cam-portion 56, when operative, swings rear .wardly said lever member 51 thereby retract-- ing the push bar 41 against the compression of'the spring 47 thuswithdrawing the pushfinger 42 from the path of movement of the eyes of the'tape T. The low cam-portion 57 when operative, permitsthe lever member 51' to swingforward, whereby the tension of the spring-47- thrusts forward the push-bar 41 to operatively position its push-finger 42 so that it may engage behind an eye 20 of the tape-T. i

1 The means for oscillating the push-bar 41' when its push-finger-42 is engaged behind an i swung forwardly to in turn push or thrust eye'20'of the tape T comprises a cam wheel 58 having a laterally]projecting cam portion 59 whichengages the side of the roller stud 48, thereby turningjthe push-bar 41 on its pivot43 an'd'against the tension of the spring 49, [thus causing I the push-finger 42 to be forward the engaged eye 20 to thereby compensatingly advance the tape toward the sewing point of the machine.

Arranged adjacent to the sewing point of themachine is a primary control mechanism nal eye "is obtained.

adapted to positively position each eye so as to assure proper relation of the same to the reciprocating needle of the sewing mechanism 7 whereby, asthe work is advanced by the feed of the machine, all risk of contact of the nee-- die with the eye is avoided, and properly traversing'stitc hes with respect to each individor'eye arresting form thereof shown and de scribedinmy aforesaid copendingapplication for United States Letters Patent. 'As an alternative to such form of-primary control means Ihave shown in the 'instant'case a mod-.

'ified arrangement whereby each eye of the tape as it arrives adjacent to the sewing point,-is pushed into proper position relative to'the reciprocating sewing needle. v This alternativeform of primarycoiitrol mechanism" comprises a housing pivotally mounted on therbed plate 10Vto extend toward the fastener; bordered marginof the tape T andjadjacent.

to the stitching or sewing point ofthe machine. The means for pivoting'thehousing 60fcomprises a bearing bracket.6lsecuredon thebedgplate 10 to overhang. the housing so astoreceive the pivot stud 62-with Which the latter-"is provided. The forward end of the housing'60 is normally disposed and yieldably held. in rearwardly swung position, as

determined by-an adjustable stop 63 fixed on This primary control mechanism may consist in the positive stop [is operatively coupled with the tail-piece 66 of said thrust-bar 65. A compression spring 69 is arranged intermediate said lever arm 68 and a stationary part of said bearing frame 25 to normally thrust said lever arm and the engaged thrust-bar forwardly into operative relation to the eyes 20 of the tape T. Fixed on said transverse shaft 27, so as to be rotated thereby, is a cam wheel 70 having suitable circumferential cam formations which operativelyengage a roller stud 71 carried by said lever arm 68, thereby producing properly timed retraction of the thrust-bar 65.

The thrust-bar 65 is provided at its forward free end with a thrust-finger 65 suitably shaped to engage the rearward sides of the eyes 20 of the tape T. The means for swingin the housing 60 so as to impart a forward thrusting or pushingmovement of the thrustfinger 65", when operatively engaged with an eye 20 of the tape T, to thereby positively dispose said eye in proper relation to the reciprocating sewing needle, comprises an upstanding support 72 fixed on the rearward portion of said housing 60 in which is adjustably mounted a laterally projecting nosing 73. Fixed on said transverse shaft 27, so as to be rotated thereby, is a cam wheel 74 provided on a side face thereof, which is opposed to said nosing 73, with a cam-portion 75 adapted at properly timed intervals to engage said nosing 73 to swing rearward the rear portion of said housing 60 to thereby-turn the same on its pivot to in turn swing forward the front end of said housing, thus carrying the thrust fingerl65into forwardly thrusting engagement with an eye QOabout to be traversed by the sewing needle, whereby said eye is properly disposed in relation to the move ments of the latter. I

In the operation of the. machine, the tape T is led from a supply reel (not shown) be-' tween the auxiliary feed roller 3437 and thence through the guides 16-17 to pass between the'presserfootand feed dog devices of the sewing mechanism (not shown) the garment being also fed with the tape between said" presser foot and feed dog in the usual manner. The auxiliary feed rollers 3437- are timed] to fe'edthetape at slightly less speed than the feed of the sewingmechanism willadvance' the work to producethe desired number of stitches between and over the eyes 20. The advance of thetape to the sewing point, however, is governed and controlledby the automatic timed actuation of the push bar 41, which, .as each eye 20 of'the tape comes adjacent thereto, is first retracted to allow the eye to pass and then project to.

a position behind the advanced eye,"whereupon the means for oscillating the push bar 41 operates to swing the same on its pivot 43 so that the push-finger 42 will engage the rear side of the advanced eye 20 and will thrust thesame forward, the tape T under such circumstances slipping through the feed rollers 34*37. It will thus be apparent that as each eye advances the tape will be compensatingly thrust forward to the desired extent required to assure of positively. controlled and uniformly governed advancing movement of the tape and its eyes under the operation or pull. of the main feed devices of the sewing mechanism. The tape thus governed and controlled, so that its advancing movement will be such as to prevent eitheroverfeeding or underfeeding by the feed of the sewingmechanism, assures that the desired number of stitches extending between and over the eyes will be produced at thesewing point. lhe eyes of the tape may be suitably manipulated at the sewing point sothat proper disposition of the same relative to the reciprocating sewing needle will be assured, either by themeans shown in my aforesaid 'copending application for United States patent, or by the means herein shown and described. l/Vhen utilizing the latter means, the operation is as follows As each eye approaches thesewing point,"

the thrust bar is first retracted to allow the eye to pass, and is then projected to dispose the thrust finger 65 behind the eye, so

that preparatory to the formation of stitches across the sides of the eye, the housing of the thrust bar 65 may be oscillated or turned on its 'pivot, to thereby swing forward the thrust-finger 65f so as to engage behind and to thereupon push forward the eye so as to dispose the same in a'proper-position relative to the descent of the sewing needle preparatory to the making of-the stitches which traverse said eye; these operations being re peated as each eye approaches the sewing point. r 7

It will be obvious from the above description, that the instant invention relates to a modified form ordifierentspeciesof faster tape control mechanism for 'sewingmachines.

verysimilar in general principles to that disclosed in my copending application above referred to, except that instead of operating to control the movement of the tape and its eyes by providing a positive stop which arrests or holds the eyes and tape in the desired predetermined positions, as inthelatter case, I here provide means which positively pushes or advances the tape and its eyes in such man ner as to assure first, the governed movement of the tape to the sewing mechanism and,

secondly, the controlled placing of each eye.v

relative'to themovement of the sewing needle prior to the production'of stitches traversing said eyes. i f V f V a -I-anrawarethat many changes maybe made in the general arrangements and combinations of the various devices andparts making up the speciesof fastener tape'con trol means for sewingmachines according to the instant invention, as well asin the details i of the construction ofthe same, without departing from the spirit of this invention. Hence, I do notlimit myself to the exact ar-' rangem'ents and combinations of the various devicesand parts as set forth in the forego-- ing specification, nor do I confinemyself to the exact details of the constructionof said partsas illustrated in the accompanying 7 drawings.

I claim 1. In combination with a sewing machine having" stitch forming means including a work feed, auxiliary means for feeding fas tener tape to said stitch forming means at slightly less speed than the work is normally means and adapted to stitch through tape having 'metallic fasteners. thereon, fastener positioning means I operative to predetermine the position of each fastener relative to the stitch forming means prior to the formation 7 of stitches traversing the same, auxiliary means for feed ng the fastener tape to said stitch forming meansvat slightly less speed I than the work is normallymoved by the works feeding-means, and positive pushing means cooperative with the 'fasteners-ofthe tape for governing the movement of the tape from said auxiliary feeding means to said stitch forming means.

.8. In combination with a sewingmachine having stitch forming means including a primary work feeding means, auxiliary means for feeding t-ape having metallic fasteners to said stitch forming means and primary feeding means operative to advance the tape at slightly less speed than the work is non; mally moved by the primary work feeding means,-and-means for governing the move- "ment of the-fastener tape from said auxiliary feeding imeans to-said primary feeding means, comprising a push-bar, means tooper- 7 ati'vely position the said push-b nr e to 7 each. fastener, of the tape as] the latter fade vances between said auxiliary and primary feedmg means, and'means to'move said pushbar with forward thrusting eifectupon-vsaid tape and its fasteners. V v 4; In combination with a sewing machine having stitch forming means including a pria mary work feeding means, auxiliary means for feeding'tape having metallic fasteners to said stitch forming means and primary j feeding means operative to advance the tape at slightly less speed thanthe work is normally moved by the primary work feeding means, fastener positioning means operative to predetermine the position of each fastener relative to the stitch forming means prior to the formation of stitches traversing the same, and means for governing the movement of the fastener tape from said auxiliary feeding means to said primary feeding'means, comprising a push-bar, means to operatively position the push-bar relativeto each fastener of the tape as the latter advances between said auxiliary and primary feeding means,

' and means to move said push-bar with'forward thrusting effect upon said tape and its fasteners.

' '5. In combination with a sewing machine 1 having stitch forming means including a primary work feeding means, auxiliary means for feeding tape having metallic fasteners to said stitch forming and primary feeding means operative to advance the tape at slightly less speed than the work is normally moved by the primary work feeding means, fastener positioning means operative to predetermine the position of each fastener relative to the stitch forming means prior to the formation 7 of stitches traversing the same, said latter means comprising a thrust-bar, means to opv eratively engage said thrust-bar behind a fastener'approaching said stitch forming means,

"and means to move said-thrustebar todispose the engaged fastener in desired predetermined position; and positive pushing means cooperative with the fasteners of the tape for governing the movement of the tape from said auxiliary'feeding means tosaid primary feeding means.

6. Incombinationwith a sewing machine hav ng stitch formlng means includlng a primary "work feeding means,'auxiliary means for feeding tape having metallic fasteners to said stitch forming and primary feeding means operative to' advance the tape at slightly'less speed than the work is normally moved by the primary work feeding means, fastener positioning means operative to predetermine the position of each fastener relative to the ,stitch" forming means prior to the formation of stitches traversing the same, said latter means comprising a thrust-bar, means to 0p eratively engage said thrust-bar behind a fase tener approaching said stitch forming means,

v and means to move sa1dthrust-bar to dispose I the engaged fastener in desired predetermined position; and means for governing the 'movement of the fastener tape from said auxiliary feeding'means to said prlmary feeding.

- means, comprising a push-bar, means to operatively position the push-bar relative to approaching said stitch forming means, and

means to move said thrust-bar to dispose the engaged fastener in desired predetermined position.

8. In combination with a sewing machine having stitch forming and work feedings means adapted to stitch through tape having metallic fasteners thereon, auxiliary means for feeding said tape to said stitch forming means at slightly less speed than the work is normally moved by the work feeding means, fastener positioning means operative to predetermine the position of each fastener relative-to the stitch vforming means prior to the formation of stitches traversing the same,

said latter means comprising a thrust-bar, means to operatively engage said thrust-bar behind a fastener approaching said stitch forming means and means to move said thrust-bar to dispose the engaged fastener in desired predetermined position.

In testimony that I claim the invention set forth above I have hereunto set my hand this 17th day of March, 1928,

- v LEO ROSEMAN.

H each'fastener of the tape as the latter advanc- 7 

